I started a thread yesterday asking for any information about a Nishiki Katmandu, a hybrid/commuter style model with Exage LX/CX components. (here). It was manufactured in Taiwan, and apparently originally sold (or maybe later serviced) from a bike shop in Whippany, NJ.

I found a serial number on the bottom bracket (running around the bracket, not across it like the others I've seen in this thread): M2D0002445

... Just uploaded pictures to the other thread.